\chapter*{Preface}
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This research of my Master program has been done at Faculty of Mathematics and Physics, Charles University in Prague, in cooperation with ČEZ, join stock company. I gratefully appreciate many people who helped me at the project.\\
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I would like to thank my supervisors at the Department of Software Engineering, Mgr. Martin Nečaský, Ph.D., Mgr. Jakub Kozák and my supervisor at the Instituted of Formal and Applied Linguistics, Mgr. Barbora Vidová-Hladká, Ph.D.. They led me through the though way of clarification and solving the goals of my Master Thesis.\\
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I also want to express my gratitude to Mgr. Kiril Ribarov, Ph.D., who provided me with data and helped me with his outside view on the topic.\\
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